| Title |
A Study on Reduction of Current Ripple due to Commutation in Brushless DC motor |
| Authors |
이광운(Lee, Gwang-Un) ; 박정배(Park, Jeong-Bae) ; 여형기(Yeo, Hyeong-Gi) ; 유지윤(Yu, Ji-Yun) |
| Keywords |
brushless DC motor ; commutation ; unipolar PWM ; current ripple ; current control |
| Abstract |
This paper presents a novel current control method to reduce the current ripple due to commutation in brushless DC motor fed with unipolar PWM voltage source inverter. The proposed current control method can reduce the current ripple due to commutation in high speed range where the DC link voltage of the inverter is less than four times of the phase back-emf. The effectiveness of the proposed current control method is verified with digital simulations and experiments on the 250W brushless DC motor drive systems. |